[Costs of Saudi Arabia's Neom green hydrogen mega-project soar by $3.5 billion] Budgets for the Neom green hydrogen mega-project, which will tap vast green energy capacity, have soared 70% to $8.5 billion, according to a financial update from co-developer Air Products. Inflation, spare parts, land upfront costs and interest on a $1 billion loan all contributed to the $3.5 billion budget increase the company is developing in the deserts of northwestern Saudi Arabia with partner ACWA Power, a Saudi renewable energy development Merchant and Neom. Editor/Xing Wentao

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